.box {
    position: relative;
    .left {
        width: 100px;
        background-color: rgb(239, 239, 239);
        position: fixed;
        left: 0;
        top: 0;
        height: 100vh;
        .item {
            line-height: 40px;
            text-align: center;
            &.active {
                background-color: #fff;
            }
        }
    }
    .right {
        position: fixed;
        left: 100px;
        top: 0;
        width: calc(100vw - 100px);
        display: flex;
        flex-wrap: wrap;
        height: 100vh;
        overflow: auto;
        .item {
            margin: 5px;
            display: flex;
            flex-direction: column;
            align-items: center;
            img {
                width: 80px;
            }
            &.active {
                img {
                    border: 1px solid red;
                }
                color: red;
            }
        }
    }
}


.alertBox {
    position: fixed;
    left: 0;
    width: 100%;
    height: 100px;
    background-color: #fff;
    bottom: 0;
}